#ifndef __THREAD_SAFE_QUEUE_HPP__
#define __THREAD_SAFE_QUEUE_HPP__

#include <thread>
#include <memory>
#include <stack>
#include <mutex>
#include <condition_variable>
#include <queue>

template <typename T>
class ThreadSafeQueue
{
private:
    mutable std::mutex mut;
    std::queue<T> data_queue;
    std::condition_variable data_cond;

public:
    ThreadSafeQueue() {}
    ThreadSafeQueue(const ThreadSafeQueue &other)
    {
        std::lock_guard<std::mutex> lk(other.mut);
        data_queue = other.data_queue;
    }
    void push(T new_value)
    {
        std::lock_guard<std::mutex> lk(mut);
        data_queue.push(new_value);
        data_cond.notify_one();
    }
    void wait_and_pop(T &value)
    {
        std::unique_lock<std::mutex> lk(mut);
        data_cond.wait(lk, [this]
                       { return data_queue.empty() == false; });
        value = data_queue.front();
        data_queue.pop();
    }
    std::shared_ptr<T> wait_and_pop()
    {
        std::unique_lock<std::mutex> lk(mut);
        data_cond.wait(lk, [this]
                       { return data_queue.empty() == false; });
        std::shared_ptr<T> res(std::make_shared<T>(data_queue.front()));
        data_queue.pop();
        return res;
    }
    bool try_pop(T &value)
    {
        std::lock_guard<std::mutex> lk(mut);
        if (data_queue.empty())
        {
            return false;
        }
        value = data_queue.front();
        data_queue.pop();
        return true;
    }
    std::shared_ptr<T> try_pop()
    {
        std::lock_guard<std::mutex> lk(mut);
        if (data_queue.empty())
        {
            return nullptr;
        }
        std::shared_ptr<T> res(std::make_shared<T>(data_queue.front()));
        data_queue.pop();
        return res;
    }
    bool empty() const
    {
        std::lock_guard<std::mutex> lk(mut);
        return data_queue.empty();
    }
    uint32_t size()
    {
        std::lock_guard<std::mutex> lk(mut);
        return data_queue.size();
    }
};

#endif